waste. dirty jobs land fill fresh kills landfill located in new york, new york last landfill in...
TRANSCRIPT
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WASTE
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Dirty Jobs
Land Fill
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Fresh Kills Landfill
Located in New York, New York Last landfill in New York City, covering
over 3,000 acres Closing after 50 years New era for the environment to restore
the ecology and natural resources of the entire city
Area had really bad odors Barges where lined up at all times of the
day in order to dump 14,000 tons of waste a day
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Objectives
Define waste Recognize the difference between waste
in the natural environment and waste created by humans
Describe Municipal Solid Waste (MSW) Know the seven types of Municipal Solid
Waste
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What is waste?
Any unwanted or discarded matter It can be a solid, liquid, or in a gaseous
form A product, material or container is not
considered waste until someone throws it away
Today we will focus mainly on solid waste
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Waste Facts Americans create a third
of the world’s total waste Each person creates 44
tons of waste per year Each person generates
90,000 pounds of waste in a lifetime
Bumper to bumper convoy of garbage trucks
Discarded office paper 12 foot high from coast to coast
Enough plastic film is produced in Texas to shrink wrap the state every year
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Where does waste come from?
All living things create waste In natural systems, trees, animals, and
other organisms contribute to waste Humans create waste as they alter
natural systems through extraction, processing, and use of natural resources
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Differences in wastes
Natural Environment Fallen branch Nature processes its own
waste Balance between
production & breakdown of organic wastes
Branch will decompose over the years, & return to the soil
There are environmental elements in nature to help with discomposure
The ecosystem remains in balance
Human Environment The tremendous quality &
concentration of human solid waste has great demands
Collection, processing, storage, and disposal systems have to be set in place
Organic wastes created by humans (like vegetable peelings) can be processed by nature in a compost pile
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Municipal Solid Waste
Is all the waste material from the activities of a city or town
There are seven categories: -Domestic Solid Waste-Commercial Solid Waste-Medical Waste-Municipal Solid Waste -Industrial Solid Waste-Construction & Demolition Solid Waste -Agriculture Solid Waste
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What is Domestic Solid Waste?
Solid waste from homes and apartments It is solid waste from the daily activities
of people’s lives Usually placed in garbage containers Items include: garbage, rubbish, ashes,
and bulky materials
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What is Commercial Solid Waste? Refuse from offices, retail stores,
schools, and restaurants Offices create mostly paper wastes Most restaurants separately store waste
cooking oil for special disposal Some school wastes may be hazardous
from laboratories
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What are Medical Wastes?
Include those from human health care and veterinary medicine
Be careful in disposing of syringes, and human bodily fluids and tissues
Over three-fourths of all medical wastes are created by hospitals
Physicians Offices-6%
Dental Offices-2% Clinics & Labs-
13% Vets-1% Funeral homes &
blood banks-1%
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What is Municipal Solid Waste?
Includes materials from cleaning streets and parks, dead animals, abandoned cars, furniture, and wastewater treatment plants
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What is Industrial Solid Waste?
Is from manufacturing It could be large amounts of refuse, such
as material that remains from smelting copper or iron
Waste raw materials such as sawmills producing sawdust
Food processing facilities produce waste food and products
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What is Construction & Demolition Solid Waste?
Construction Include scraps of
lumber broken brick pieces of electrical
wire roofing material
scraps unused concrete
Demolition Materials remaining
after a building is destroyed
Some materials may be salvaged
May include such items as:-Plaster-Brick-Mortar-Glass
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What is Agriculture Solid Waste? Created in raising animals and growing crops Most of the wastes are returned to the land to
improve the fertility of the soil The wastes vary depending on the animal Chicken excrement is used for what? What is cattle manure used for? Crop residues that are left in the field
decompose and improve productivity of the soil by being plowed under
Crop residues may be used as animal feed Also includes, bulky items such as worn-out
equipment, and junk tractors
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Activity
Materials needed-Construction paper-Magazines-Glue-Scissors-Pen or Pencil
Get into groups of three As a group construct a collage of Municipal Solid Waste using
the categories we just talked about Use the magazines to cut out pictures, words, or cut out letters
to make words, in order to show the different types of wastes When your group has finished, sit quietly until everyone has
finished, and we will use the collages to review today’s objectives together
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Review Questions
So what did we define waste to be? What are the differences in natural waste
and human waste? What is the definition of Municipal Solid
Waste? Can anyone name to me again the seven
categories of Municipal Solid Waste?